#!/usr/bin/python
# -*- coding: UTF-8 -*-

a = 20
b = 10
c = 15
d = 5
e = 0

e = (a + b) * c / d       # (30) * 15 / 5
print("(a + b) * c / d 运算结果为：",  e)

e = ((a + b) * c) / d     # (30 * 15 ) / 5
print("((a + b) * c) / d 运算结果为：",  e)

e = (a + b) * (c / d);    # (30) * (15 / 5)
print("(a + b) * (c / d) 运算结果为：",  e)

e = a + (b * c) / d;      # 20 + (150 / 5)
print("a + (b * c) / d 运算结果为：",  e)

e = a / b ** 0 + 1
print("a / b ** 0 + 1 运算结果为：", e)

e = a - b >= c
if ( e ):
    print("e = a - b >= c", "True")
else:
    print("e = a - b >= c", "False")
